化工进展 ›› 2021, Vol. 40 ›› Issue (6): 3163-3171.doi: 10.16085/j.issn.1000-6613.2020-1400

• 能源加工与技术 • 上一篇    下一篇

脉动热管用于电动汽车锂电池散热性能试验

陈萌(), 李静静   

  1. 东北林业大学交通学院,黑龙江 哈尔滨 150040
  • 收稿日期:2020-07-20 修回日期:2020-09-08 出版日期:2021-06-06 发布日期:2020-09-22
  • 通讯作者: 陈萌 E-mail:chenmeng623@nefu.edu.cn
  • 作者简介:陈萌(1979—),男,博士,副教授,硕士生导师,研究方向为锂动力电池。E-mail:chenmeng623@nefu.edu.cn
  • 基金资助:
    国家自然科学基金(31470611);中央高校基础科研业务费(2572018GB03)

Experiment on heat dissipation performance of electric vehicle lithium battery based on pulsating heat pipe

CHEN Meng(), LI Jingjing   

  1. School of Traffic and Transportation, Northeast Forestry University, Harbin 150040, Heilongjiang, China
  • Received:2020-07-20 Revised:2020-09-08 Online:2021-06-06 Published:2020-09-22
  • Contact: CHEN Meng E-mail:chenmeng623@nefu.edu.cn

摘要:

针对电动汽车车用锂电池热管理问题,依据脉动热管(TiO2纳米流体为工质)的高系数传热特性,设计了车用锂电池散热组件并进行了实用环境下的散热性能试验。试验结果表明,在2%的工质浓度(质量分数)和50%充液率条件下,可实现闭环脉动热管(TiO2-CLPHP)传热性能的最优化;同时,所设计的TiO2-CLPHP可以保证不同放电倍率条件下(0.5C、1C、1.5C)锂电池表面最高温度不超过35℃,最大温差在2.25℃以内,实现了锂电池表面温度均匀性能的有效改善(改善率达55%),并可确保在不同路面条件下,TiO2-CLPHP对锂电池的散热性能基本不变。

关键词: 锂离子电池, 热管理, 脉动热管, 热传导, 温度

Abstract:

To solve the heat management problem of electric vehicle lithium battery, the heat dissipation components of automotive lithium battery were designed and the heat dissipation performance test was carried out in the practical environment based on the high coefficient heat transfer characteristics of pulsating heat pipe (TiO2 nanofluid as working medium). The results showed that the optimal heat transfer performance of the closed loop pulsating heat pipe (TiO2-CLPHP) can be achieved with 2% working medium concentration and 50% heat pipe filling rate. At the same time, TiO2-CLPHP can ensure that under different discharge rate conditions (0.5C, 1C, 1.5C), the maximum temperature on the surface of the lithium battery did not exceed 35℃, and the maximum temperature difference was within 2.25℃, effectively improving the surface temperature uniformity (the improvement rate was up to 55%). Moreover, TiO2-CLPHP can ensure that the heat dissipation performance of the lithium battery remained unchanged at the different road conditions.

Key words: lithium-ion battery, thermal management, pulsating heat pipe, heat conduction, temperature

中图分类号: 

  • TK512